该文件定义了各种车辆噪声和振动，这些振动和振动归因于车辆的基础制动部件，特别是乘用车和轻型卡车。这些定义包括盘式制动器和鼓式制动器。频率范围从接近零赫兹（触觉）一直到17千赫，或正常听力的上限。这些噪音和振动可能会直接从制动系统辐射出去，或提供激发能量，导致其他车辆部件做出反应。

This document defines various vehicular noises and vibrations that are attributed to being created by the foundation brake components of the vehicle, particularly on passenger cars and light trucks. These definitions cover both disc and drum brakes. The frequency ranges from near zero Hz (tactile sensations) all the way up to 17 kHz, or the upper limit of normal hearing. These noises and vibrations may either directly radiate off the brake system or provide the excitation energy that causes other vehicle components to react.